KR20200101965A - Radio frequency channel access detection method and apparatus - Google Patents

Abstract

Embodiments of the present application disclose a method and apparatus for detecting a connection to a radio frequency channel to detect a connection mode between a radio frequency channel and an antenna, thereby reducing the difficulty in secondary on-site configuration, and improving configuration efficiency. Improve. The method in the embodiments of the present application uses at least one of the N reference radio frequency channels of the reference radio frequency unit, by the first radio frequency unit by using each of the N radio frequency channels to be detected. Receiving signals transmitted by doing so; And determining a connection relationship between the N to-be-detected radio frequency channels and the N antennas based on signals received by using each to-be-detected radio frequency channel.

Description

Radio frequency channel access detection method and apparatus

The present application relates to the field of antenna technologies, in particular to a method and apparatus for detecting a radio frequency channel connection.

In an existing wireless communication network, an active antenna unit (AAU) is generally used to replace a plurality of common antennas, thereby reducing difficulties in site selection and characteristic adjustment. In addition, a cluster cable design is used to obtain a 30% to 70% capacity gain when 70% space is saved. The AAU includes an antenna unit (AU) and an active radio frequency unit (RU). The active radio frequency unit may also be referred to as an active module, and the antenna unit may also be referred to as an antenna module. In order to connect to more radio frequency modules, the number of ports of the antenna unit can be expanded by using an internally integrated combiner. For example, the increased ports may include an active port configured to connect to an active radio frequency unit and a passive port configured to connect to a passive radio unit, e.g., a remote radio unit (RRU). . A specific structure is shown in FIGS. 1 and 2. When multiple antennas are used, the amplitudes and phases of signals on different radio frequency channels are adjusted. Connection relationships between the radio frequency channel of the active RU and each antenna in the antenna unit and between the radio frequency channel of the passive RU and each antenna in the antenna unit need to be determined. In other words, the correspondence between the radio frequency channel of the active RU and the radio frequency channel of the passive RU also needs to be determined. In actual operations, a connection relationship between the AAU's active RU and the AAU's antenna port may be established during production. Thus, the connection relationship is determined and correct. However, when the radio frequency channel of a passive RU (e.g., RRU) is connected to the passive port, manual operation is generally required. In this case, the radio frequency channel and the antenna unit may be connected incorrectly. If the cables between the passive RU (RRU) and the antenna unit are connected in an incorrect sequence, the beamforming is not precise or even inaccurate. As a result, as shown in Fig. 3, network coverage is changed and network performance is deteriorated.

When the cables between the passive RU (RRU) and the antenna unit (AU) of the active antenna unit (AAU) are connected in an incorrect sequence and this connection sequence needs to be corrected, the maintenance personnel can quickly replace the incorrectly connected cable. Cannot be determined, and configuration efficiency cannot be guaranteed.

Embodiments of the present application provide a method and apparatus for detecting a radio frequency channel connection in order to detect a connection mode between a radio frequency channel and an antenna, thereby reducing the difficulty in secondary on-site configuration, and improving configuration efficiency. Improve.

A first aspect of the present application provides a method of detecting access to a radio frequency channel. This method comprises the steps of receiving a signal transmitted by using at least one of the N reference radio frequency channels, by using each of the N to-be-detected radio frequency channels, where N is an integer greater than or equal to 2; And determining a connection relationship between the N to-be-detected radio frequency channels and the N antennas based on signals received by using each to-be-detected radio frequency channel, wherein the N to-be-detected radios Any one of the frequency channels and one of the N reference radio frequency channels are connected to one of the N antennas by using a combiner device, and the radio frequency channels to be detected are different reference radio frequency channels and different antennas. Is connected to. Optionally, the N radio frequency channels to be detected belong to the first radio frequency unit. Optionally, the N reference radio frequency channels belong to a reference radio frequency unit. Optionally, the step of determining the connection relationship between the N radio frequency channels to be detected and the N antennas may be performed by the first radio frequency unit, or another apparatus or device, for example, N detections. It can be performed by a baseband unit that is connected to the radio frequency channels to be used. In this embodiment of the present application, when the connection relationship between the radio frequency channel to be detected and the antenna is incorrect and the secondary configuration needs to be performed, an error present during the configuration of this connection relationship can be automatically detected, Reduces the difficulty in secondary on-site configuration and improves configuration efficiency.

In a first implementation of the first aspect of the embodiments of the present application, a connection between N to-be-detected radio frequency channels and N antennas based on signals received by using each to-be-detected radio frequency channel The step of determining the relationship includes between at least one of the N to-be-detected radio frequency channels and at least one of the N reference radio frequency channels based on signals received by using each to-be-detected radio frequency channel. Determining a connection relationship; Determining a connection relationship between the N radio frequency channels to be detected and the N antennas based on a connection relationship between at least one of the N radio frequency channels to be detected and at least one of the N reference radio frequency channels Includes. In a possible design, in a second implementation of the first aspect of the embodiments of the present application, the method further comprises the step of sequentially transmitting signals by using the N reference radio frequency channels; Receiving signals transmitted by a first radio frequency unit by using each of the N to-be-detected radio frequency channels, by using at least one of the N reference radio frequency channels of the reference radio frequency unit, comprises: And sequentially receiving signals transmitted by the first radio frequency unit by using each of the N to-be-detected radio frequency channels, by using the N reference radio frequency channels. In some scenarios, in a detection manner in which signals are transmitted sequentially by using different reference radio frequency channels, the quantity of times for transmitting signals may be reduced. For example, a connection relationship between N radio frequency channels to be detected and N antennas can be determined only after signals are transmitted by using N-1 reference radio frequency channels. When it is determined that some of the N to-be-detected radio frequency channels are correctly connected, some reference radio frequency channels may be further selected to transmit signals for some of the to-be-detected radio frequency channels that are correctly connected. Also, transmitting signals on separate reference radio frequency channels can reduce interference between signals, so that the strength of the signal on the radio frequency channel to be detected is more accurately determined.

In a possible design, in a third implementation of the first aspect of the embodiments of the present application, N to-be-detected radio frequency channels and N antennas based on signals received by using each to-be-detected radio frequency channel. Determining the connection relationship between the N radio frequencies to be detected based on the signal strength of the signal transmitted by using the reference radio frequency channel and received by using each to be detected radio frequency channel. Determining a connection relationship between one of the channels and one of the N reference radio frequency channels-the radio frequency channel to be detected having the strongest signal strength of the received signal is connected to the reference radio frequency channel, and the radio frequency to be detected The channel includes-connected to an antenna connected to the reference radio frequency channel. When the connection relationship between radio frequency channels is determined based on signal strength, the signal processing process is simplified, and the detection method is simpler and easier to implement.

In a possible design, in a fourth implementation of the first aspect of the embodiments of the present application, this method comprises: simultaneously transmitting signals by using N reference radio frequency channels-any of the N reference radio frequency channels. The characteristic of the signal transmitted by using one is different from the characteristic of the signal transmitted by using the other of the N reference radio frequency channels; Receiving signals transmitted by a first radio frequency unit by using each of the N to-be-detected radio frequency channels, by using at least one of the N reference radio frequency channels of the reference radio frequency unit, comprises: And receiving signals simultaneously transmitted by the first radio frequency unit by using each of the N to-be-detected radio frequency channels, by using the N reference radio frequency channels. When signals are transmitted simultaneously by using N reference radio frequency channels, the time required for searching can be shortened, and detection efficiency can be improved.

In a possible design, in a fifth implementation of the first aspect of the embodiments of the present application, N to-be-detected radio frequency channels and N antennas based on signals received by using each to-be-detected radio frequency channel. Determining the connection relationship between the N radio frequency channels to be detected based on signal strengths of signals having the same characteristics and in signals received by using each radio frequency channel to be detected Determining a connection relationship between one of the N and one of the N reference radio frequency channels-by using this, the radio frequency channel to be detected from which the signal with the strongest signal strength in signals having the same characteristics is received Connected to the reference radio frequency channel, and the radio frequency channel to be detected is connected to an antenna connected to the reference radio frequency channel.

In a possible design, in a sixth implementation of the first aspect of the embodiments of the present application, by using each of the N to-be-detected radio frequency channels, by the first radio frequency unit, the N reference radios of the reference radio frequency unit. After the step of receiving signals transmitted by using at least one of the frequency channels, the method comprises, by a first radio frequency unit, the signals received by using each to-be-detected radio frequency channel. Further comprising transmitting to a baseband unit connected to the frequency unit; Determining, by the baseband unit, a connection relationship between the N to be detected radio frequency channels and the N antennas based on signals received by using each to be detected radio frequency channel And determining a connection relationship between the N to-be-detected radio frequency channels and the N antennas based on signals received by using the to-be-detected radio frequency channel.

In a possible design, in a seventh implementation of the first aspect of the embodiments of the present application, the reference radio frequency unit is an active radio frequency unit, and the first radio frequency unit is a passive radio frequency unit; Alternatively, the reference radio frequency unit and the first radio frequency unit are passive radio frequency units. The embodiments of the present application can be applied to a scenario in which radio frequency units of any type are combined and connected to the same antenna unit.

In a possible design, in an eighth implementation of the first aspect of the embodiments of the present application, the reference radio frequency unit and the first radio frequency unit are connected to the same baseband unit. When the reference radio frequency unit and the first radio frequency unit are connected to the same baseband unit, the baseband unit transmits the signal on the reference radio frequency channel, receives the signal on the radio frequency channel to be detected, and the radio frequency channel and antenna to be detected. The connection relationship between them can be conveniently controlled. Of course, the reference radio frequency unit and the first radio frequency unit may also be connected to different baseband units. In this case, the baseband units need to communicate with each other and carry messages such as a signal transmission sequence and a signal reception result to detect a connection relationship between the radio frequency channel to be detected and the antenna.

A second aspect of the present application provides an apparatus for detecting a radio frequency channel connection, which includes N radio frequency channels to be detected. Any one of the N radio frequency channels to be detected and one of the N reference radio frequency channels are connected to one of the N antennas by using a combiner device, and the radio frequency channels to be detected are different reference radio frequency channels. And to different antennas, N is an integer greater than or equal to 2; Each of the N to-be-detected radio frequency channels is configured to receive signals transmitted by using at least one of the N reference radio frequency channels; The radio frequency channel connection detection apparatus further comprises a processor, wherein the processor is connected to the N to-be-detected radio frequency channels, and N detections based on signals received by using each to-be-detected radio frequency channel. It is configured to determine a connection relationship between the N antennas and the radio frequency channels to be made. Optionally, this radio frequency channel connection detection apparatus includes a first radio frequency unit, and the N radio frequency channels to be detected belong to the first radio frequency unit. The processor may be disposed in the first radio frequency unit, may be disposed as an independent component or module, or may be disposed in another component or device configured to detect the connection relationship between the radio frequency channel and the antenna, for example For example, it may be disposed in a tool device specially configured to detect a connection to a radio frequency channel, or may be disposed in a baseband unit connected to the N radio frequency channels to be detected. In this embodiment of the present application, when the connection relationship between the radio frequency channel to be detected and the antenna is incorrect and the secondary configuration needs to be performed, an error present during the configuration of this connection relationship can be automatically detected, Reduces the difficulty in secondary on-site configuration and improves configuration efficiency.

In a possible design, in a first implementation of the second aspect of the embodiments of the present application, the processor is configured to, based on the signals received by using each to-be-detected radio frequency channel, among the N to-be-detected radio frequency channels. Determine a connection relationship between the at least one and at least one of the N reference radio frequency channels; And determining a connection relationship between the N radio frequency channels to be detected and the N antennas based on a connection relationship between at least one of the N radio frequency channels to be detected and at least one of the N reference radio frequency channels. It is composed additionally.

In a possible design, in a second implementation of the second aspect of the embodiments of the present application, this radio frequency channel connection detection apparatus further comprises N reference radio frequency channels, and the N reference radio frequency channels sequentially Is configured to transmit; Each of the N to-be-detected radio frequency channels is further configured to sequentially receive signals transmitted by using the N reference radio frequency channels. Optionally, this radio frequency channel connection detection apparatus includes a reference radio frequency unit, and the N reference radio frequency channels belong to this reference radio frequency unit.

In a possible design, in a third implementation of the second aspect of the embodiments of the present application, the processor is capable of performing a signal transmitted by using a reference radio frequency channel and received by using each to-be-detected radio frequency channel. To determine a connection relationship between one of the N to-be-detected radio frequency channels and one of the N reference radio frequency channels based on the signal strength-the radio frequency channel to be detected with the highest signal strength of the received signal is the reference radio. Connected to a frequency channel, and the radio frequency channel to be detected is connected to an antenna connected to the reference radio frequency channel-specifically configured.

In a possible design, in a fourth implementation of the second aspect of the embodiments of the present application, this radio frequency channel connection detection apparatus further comprises N reference radio frequency channels, and the N reference radio frequency channels simultaneously transmit signals. So that the characteristic of the signal transmitted by using any one of the N reference radio frequency channels is different from the characteristic of the signal transmitted by using the other of the N reference radio frequency channels; Each of the N to-be-detected radio frequency channels is specifically configured to receive signals simultaneously transmitted by using the N reference radio frequency channels. Optionally, this radio frequency channel connection detection apparatus includes a reference radio frequency unit, and the N reference radio frequency channels belong to this reference radio frequency unit.

In a possible design, in a fifth implementation of the second aspect of the embodiments of the present application, the processor provides the signal strengths of signals having the same characteristics and in signals received by using each to-be-detected radio frequency channel. To determine a connection relationship between one of the N to-be-detected radio frequency channels and one of the N reference radio frequency channels on the basis of-using this to have the strongest signal strength in signals of the same characteristic The to-be-detected radio frequency channel through which the signal is received is connected to a reference radio frequency channel, and the radio frequency channel to be detected is connected to an antenna connected to the reference radio frequency channel-specifically configured.

In a possible design, in a sixth implementation of the second aspect of the embodiments of the present application, the radio frequency channel connection detection apparatus further comprises a baseband unit, the baseband unit comprising a processor, a memory, and a communication interface, The baseband unit is connected to the N to-be-detected radio frequency channels by using the communication interface; The memory is coupled to the processor, and is configured to store programs and/or instructions to be executed by the processor; The communication interface is configured to receive a signal transmitted by each to-be-detected radio frequency channel; Each radio frequency channel to be detected is further configured to transmit the received signals to the baseband unit.

In a possible design, in a seventh implementation of the second aspect of the embodiments of the present application, the first radio frequency unit is a passive radio frequency unit.

In a possible design, in an eighth implementation of the second aspect of the embodiments of the present application, the reference radio frequency unit is an active radio frequency unit or a passive radio frequency unit.

In a possible design, in a ninth implementation of the second aspect of the embodiments of the present application, N reference radio frequency channels and N to-be-detected radio frequency channels are connected to the same baseband unit.

A third aspect of the present application provides a computer-readable storage medium. Such computer-readable storage media store instructions. When such instructions are executed on a computer, such computer is configured to perform the method according to the above-described aspect.

A fourth aspect of the present application provides a computer program product comprising instructions. When such a computer program product is executed on a computer, such a computer is configured to perform the method according to the above-described aspect.

In the technical solutions provided in the embodiments of the present application, one or more signals transmitted by using at least one of the N reference radio frequency channels are received by using each of the N to-be-detected radio frequency channels. -N is an integer of 2 or more -; The connection relationship between the N radio frequency channels to be detected and the N antennas is determined based on signals received by using each radio frequency channel to be detected, and any of the N radio frequency channels to be detected. One of the one and N reference radio frequency channels is connected to one of the N antennas by using a combiner device, and the radio frequency channels to be detected are connected to different reference radio frequency channels and different antennas. In the embodiments of the present application, when the connection relationship between the radio frequency channel and the antenna is inaccurate and the secondary configuration needs to be performed, an error present during the configuration of this connection relationship can be automatically detected, so that the secondary It reduces the difficulty in on-site configuration and improves configuration efficiency.

1 is a schematic diagram of a connection between an active antenna unit and a passive radio frequency unit according to an embodiment of the present application.
2 is a schematic diagram of a connection between an active antenna unit and a passive radio frequency unit according to an embodiment of the present application.
3 is a schematic diagram of a change in a beam coverage range according to an embodiment of the present application.
4 is a schematic diagram of an application scenario of a method for detecting access to a radio frequency channel according to an embodiment of the present application.
5 is a schematic diagram in which signals in different frequency bands are separately processed by using different radio frequency channels according to an embodiment of the present application.
6 is a schematic diagram of a method of detecting access to a radio frequency channel according to an embodiment of the present application.
7 is a schematic diagram of connection of a reference radio frequency channel and a radio frequency channel to be detected according to an embodiment of the present application.
8 is a schematic diagram of another connection of a reference radio frequency channel and a radio frequency channel to be detected according to an embodiment of the present application.
9 is a schematic diagram of another radio frequency channel access detection method according to an embodiment of the present application.
10 is a schematic diagram of another connection of a reference radio frequency channel and a radio frequency channel to be detected according to an embodiment of the present application.
11 is a schematic diagram of another connection of a reference radio frequency channel and a radio frequency channel to be detected according to an embodiment of the present application.
12 is a schematic diagram of an apparatus for detecting access to a radio frequency channel according to an embodiment of the present application.
13 is a schematic diagram of another radio frequency channel access detection apparatus according to an embodiment of the present application.
14 is a schematic diagram of another radio frequency channel access detection apparatus according to an embodiment of the present application.
15 is a schematic structural diagram of a baseband unit according to an embodiment of the present application.

Embodiments of the present application provide a method and apparatus for detecting a radio frequency channel connection in order to detect a connection mode between a radio frequency channel and an antenna, thereby reducing the difficulty in secondary on-site configuration, and improving configuration efficiency. Improve.

Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

In the specification, claims, and accompanying drawings of the present application, the terms "first", "second", "third", "fourth", etc. ( If present) is intended to distinguish between similar objects, but does not necessarily indicate a particular order or sequence. It should be understood that data referred to in this manner is interchangeable in appropriate circumstances such that the embodiments described herein may be implemented in an order different from the content illustrated or described herein. In addition, the terms "include", "have" and any other variations are meant to cover non-exclusive inclusion, e.g., a process comprising a list of steps or units. A method, system, product, or device is not necessarily limited to those steps or units that are explicitly listed, but other steps or units that are not explicitly listed or are specific to such a process, method, product, or device. Can include.

Embodiments of the present application can be applied to the application scenario shown in FIG. 4. In this application scenario, an antenna unit (AU) is connected to one or more radio frequency unit RUs, this antenna unit includes N antennas, and N is an integer of 2 or more. A plurality of radio frequency units are separately connected to the antennas of the antenna unit by using a combiner. If the connection relationship between one radio frequency unit and the antennas of the antenna units is correct, whether the connection relationship between the antennas of the other radio frequency unit and the antenna unit is correct can be determined based on the connection relationship to the radio frequency unit. For example, as shown in Fig. 4, the antenna unit is connected to two radio frequency units: a first radio frequency unit and a second radio frequency unit. Each radio frequency channel of the first radio frequency unit is connected to a respective antenna in the antenna unit, and each radio frequency channel of the second radio frequency unit is connected to a respective antenna in the antenna unit. The first radio frequency unit may be a reference radio frequency unit, and the second radio frequency unit may be a radio frequency unit to be detected.

It should be noted that different radio frequency units can process signals in different frequency bands. For example, as shown in Fig. 5, the combiner is connected to both radio frequency channels of the first group and radio frequency channels of the second group, and the radio frequency channels of the first group and the radio frequency channels of the second group. Radio frequency channels may separately belong to different radio frequency units. The first radio frequency unit including the radio frequency channels of the first group can process a signal in a frequency band of 1710 MHz to 1880 MHz, and the second radio frequency unit including radio frequency channels of the second group is 1920 MHz. It can process a signal in a frequency band of 2600 MHz, and an antenna connected to these two radio frequency units can receive a signal in a frequency band of 1710 MHz to 2600 MHz. If the radio frequency channels of the first group are reference radio frequency channels, and the radio frequency channels of the second group are radio frequency channels to be detected, that is, the frequency band of the radio frequency signal processed by using the reference radio frequency channel is detected. If it is different from the frequency band of the radio frequency signal processed by using the radio frequency channel to be detected, when the detection solution provided in the embodiments of the present application is used, the use of the radio frequency channel to be detected and the reference radio frequency channel The frequency bands processed by need to be configured to be the same. For example, the frequency band processed by using the radio frequency channels of the second group (i.e., radio frequency channels to be detected) is in the radio frequency channels of the first group (i.e., reference radio frequency channels). It is set to be the same as a frequency band supported by, that is, a frequency band of 1710 MHz to 1880 MHz. Specifically, the radio frequency unit to be detected may be a passive radio frequency unit, and the reference radio frequency unit may be a passive radio frequency unit or an active radio frequency unit. In the application scenarios shown in Figs. 1 and 2, an active radio frequency unit may be used as a reference radio frequency unit, an external radio frequency unit may be a radio frequency unit to be detected, and the external radio frequency unit is a remote radio (RRU). unit).

Alternatively, it will be appreciated that the radio frequency channels for which the connection relationship between them needs to be detected can originate from different radio frequency units to be detected, and the reference radio frequency channels can originate from different radio frequency units. I can. In this case, the detection method provided in the embodiments of the present application may be used by exchanging information between different radio frequency units or through control of at least one baseband unit connected to different radio frequency units. have. For simplicity of explanation, in the embodiments of the present application, an example in which all radio frequency channels to be detected belong to one radio frequency unit to be detected and all reference radio frequency channels belong to one reference radio frequency unit is used for explanation. do.

For ease of understanding, the following describes a specific procedure in the embodiments of the present application. Referring to FIG. 6, when measurement signals are sequentially transmitted by using reference radio frequency channels, the radio frequency channel connection detection apparatus includes a first radio frequency unit. An embodiment of a method of detecting access to a radio frequency channel in the embodiments of the present application includes the following steps.

601. Transmitting signals by using at least one of the N reference radio frequency channels of the reference radio frequency unit.

It should be noted that the signal in this and subsequent embodiments may be a dedicated measurement signal, or may be another existing signal, for example a signal carrying service data or a reference signal. For ease of understanding, in this and subsequent embodiments, an example in which such a signal is a measurement signal is used for explanation. In order to differentiate the measurement signals in different embodiments, in a scenario in which measurement signals are transmitted sequentially, these measurement signals are referred to as first measurement signals; In a scenario in which measurement signals are transmitted simultaneously, these measurement signals are referred to as a second measurement signal. This embodiment is applied to a scenario in which measurement signals are sequentially transmitted by using M reference radio frequency channels of N reference radio frequency channels, where M is an integer greater than or equal to 1 and less than or equal to N. The signal in this embodiment is described by using the first measurement signal as an example.

Specifically, the first measurement signals are transmitted by using the M reference radio frequency channels of the reference radio frequency unit, and the first measurement signals establish a connection relationship between the N radio frequency channels to be detected and the N antennas. Used to determine. Specifically, the first measurement signals are sequentially transmitted by using the M reference radio frequency channels of the reference radio frequency unit according to a preset transmission sequence, and the transmitted first measurement signals are each of the first radio frequency units. May be received by using a radio frequency channel to be detected. Optionally, M can be N or N-1. Specifically, the connection relationship between the N radio frequency channels to be detected and the N antennas can be determined only after signals are transmitted by using N or N-1 reference radio frequency channels.

Each of the N reference radio frequency channels is connected to one to-be-detected radio frequency channel by using a combiner device, and different reference radio frequency channels are connected to different to-be-detected radio frequency channels. When a reference radio frequency channel is used to transmit a signal, the to-be-detected radio frequency channel connected to this reference radio frequency channel is returned to the receiving channel of the radio frequency channel to be detected by using the standing wave channel and radio frequency loopback technique. , Can be used to loop through the signal transmitted by using the reference radio frequency channel and receive the signal. In this case, the strength of the signal received by using the radio frequency channel to be detected is relatively strong. Since radio frequency signals are characterized by spatial radiation and different radio frequency channels cannot be completely isolated, when a signal is transmitted on a reference radio frequency channel, the transmitted signal is a radio frequency channel to be detected that is not connected to the reference radio frequency channel. Also received on the award. Specifically, the transmitted signal flows as an interference signal to another radio frequency channel to be detected, and the strength of a signal received on another radio frequency channel to be detected is very weak.

The first measurement signal is a generic name of measurement signals transmitted on each reference radio frequency channel. In this embodiment, the characteristics of the first measurement signals transmitted on the reference radio frequency channels may be the same or may be different. The first measurement signal is a set of a plurality of measurement signals transmitted in a sequence, and is used to identify a second measurement signal in a scenario in which measurement signals are transmitted simultaneously by using reference radio frequency channels. The same characteristic of these signals can be expressed in multiple forms. For example, the first measurement signals may be the same orthogonal frequency division multiplexing (OFDM) symbol, or the first measurement signals are generated by using the same reference sequence, or the first measurement signals are The same signal scrambling method is used. Different features of these signals can also be represented in a plurality of forms. For another example, the first measurement signals may be different orthogonal frequency division multiplexing (OFDM) symbols, or the first measurement signals are generated by using different reference sequences, or the first measurement signal They use different signal scrambling schemes. This is not specifically limited in this specification. In this and subsequent embodiments, the first radio frequency unit may be a passive radio frequency unit, and the reference radio frequency unit may be an active radio frequency unit or a passive radio frequency unit. For ease of description, in this and subsequent embodiments, an example in which the reference radio frequency unit is an active radio frequency unit and the first radio frequency unit is a passive radio frequency unit is used for description. In this and subsequent embodiments, an example in which the reference radio frequency unit is an active radio frequency unit unit of an active antenna unit (AAU) and the first radio frequency unit is a first radio remote unit (RRU) is used for explanation.

For example, in a process in which the active radio frequency unit of the AAU sequentially transmits the first measurement signals according to a preset transmission sequence, the preset transmission sequence may be a default sequence set by a supplier, for example, reference The radio frequency channels are numbered from top to bottom and from left to right; Alternatively, the preset transmission sequence may be a test sequence set by the staff during product installation, and transmission channels are numbered randomly. For example, N=M=4. When there are four reference radio frequency channels, these four reference radio frequency channels are sequentially numbered from 1 to 4 in a default sequence set by the provider. In the detection process, the first first measurement signal can be transmitted first by using the reference radio frequency channel 1. After the transmission on the reference radio frequency channel 1 is completed, a second first measurement signal is transmitted by using the reference radio frequency channel 2. This process is repeated until the first measurement signals are transmitted by using all four reference radio frequency channels. The time interval at which the first measurement signals are transmitted by using the channels may be set based on actual conditions. This is not specifically limited in this specification. The quantity of reference radio frequency channels may alternatively be another value, for example 6 or 8. This is not specifically limited in this specification.

It should be further noted that the N reference radio frequency channels may be all channels of the reference radio frequency unit, or some channels of the reference radio frequency unit. This is not specifically limited in this specification.

Optionally, sequentially transmitting signals by using M of the N reference radio frequency channels may be implemented in a cyclic determination method. Specifically, whenever one reference radio frequency channel is used to transmit a signal, it is determined whether transmission of the first measurement signals is completed on all of the M reference radio frequency channels. When transmission of the first measurement signals is completed, signal transmission on the reference radio frequency channels is ended, and when transmission of the first measurement signals is not completed, signal transmission on the next reference radio frequency channel is continued.

Optionally, when a preset time threshold is met, it is determined whether transmission of the first measurement signals is completed on all of the M reference radio frequency channels. When transmission of the first measurement signals is completed on all of the M reference radio frequency channels, step 602 is performed. If transmission of the first measurement signals is not completed on all of the M reference radio frequency channels, signal transmission continues on the next reference radio frequency channel.

In a scenario in which the first measurement signals are sequentially transmitted by using M of N reference radio frequency channels, after transmission of measurement signals is completed on N-1 of N reference radio frequency channels, the remaining unique It can be appreciated that the connection relationship between the reference radio frequency channel and the radio frequency channel to be detected can be determined. Thus, measurement signals may not be transmitted by using the last reference radio frequency channel. In practical application, measurement signals may or may not be transmitted by using the last reference radio frequency channel. This is not specifically limited in this specification.

602. The first radio frequency unit transmits one or more signals transmitted by using at least one of the N reference radio frequency channels of the reference radio frequency unit, by using each of the N to-be-detected radio frequency channels. Inbox.

The first radio frequency unit receives first measurement signals transmitted by using at least one of the N reference radio frequency channels of the reference radio frequency unit, by using each of the N to-be-detected radio frequency channels. do. The quantity of the N radio frequency channels to be detected in the first radio frequency unit is equal to the quantity of the N reference radio frequency channels. For example, when the quantity of radio frequency channels to be detected in the first radio frequency unit is 4, that is, when N is 4, the quantity of reference radio frequency channels is also 4, that is, N is also 4.

For example, since the first measurement signals are sequentially transmitted according to a preset transmission sequence, the first measurement signals are also sequentially received by using the radio frequency channels to be detected. For example, when there are 4 reference radio frequency channels, each numbered 1 to 4, there are also 4 to-be-detected radio frequency channels that are of the first radio remote unit and connected to the passive port, and these 4 Radio frequency channels to be detected are also numbered 1 to 4, respectively. Due to features such as spatial emission of the first measurement signal, interference is created between radio frequency channels. Specifically, in addition to the first measurement signal transmitted by using the reference radio frequency channel 1 connected to the radio frequency channel 1 to be detected, the first measurement signal transmitted by using another reference radio frequency channel (interference path) To receive the radio frequency channel 1 to be detected of the first radio remote unit is additionally used. For example, when the reference radio frequency channel 1 is used to transmit the first measurement signal, if the radio frequency channel 1 to be detected is connected to the reference radio frequency channel 1, the standing wave channel and the reference radio frequency channel 1 are not connected. Radio frequency channels to be detected (due to radio frequency channel 2 to be detected, spatial radiation, etc., the transmitted first measurement signal (i.e., interference signal) is received on radio frequency channel 3 to be detected, and radio frequency channel 4 to be detected. The signal can be looped back to radio frequency channel 1 to be detected by using ). The characteristics of the interfering signal are the same as that of the first measurement signal, and the strength of the interfering signal is weaker than that of the first measurement signal received by using the radio frequency channel 1 to be detected.

For example, the first radio frequency unit is the first radio remote unit, the reference radio frequency unit is the active radio frequency unit AU of the AAU, and sequentially the first measurement signals transmitted by using the channels of the active radio frequency unit. The N to-be-detected radio frequency channels of the first wireless remote unit are used to receive with. Regardless of whether the first measurement signals transmitted by using the reference radio frequency channel each time have the same characteristics, since the first measurement signals are transmitted in a sequence, it is not necessary to use N radio frequency channels to be detected at the same moment. The first measurement signals received by the device have the same characteristics, but different signal strengths. The signal on the radio frequency channel to be detected connected to the reference radio frequency channel has the strongest strength, and the first measurement signal received by another radio frequency channel to be detected has weak signal strength due to characteristics such as spatial radiation of the signal. , And thus can be defined as an interference signal.

In order to implement the method in the embodiments of the present application, in order to implement the method in the embodiments of the present application, when the reception frequency bands of different channels are different in the radio frequency channels of the first group and the radio frequency channels of the second group shown in FIG. It can be understood that in the embodiment and subsequent embodiments, the reception frequency band of the radio frequency channel to be detected may be set to a frequency band in which a signal transmitted by the reference radio frequency channel can be received.

603. Determining a connection relationship between at least one of the N to-be-detected radio frequency channels and at least one of the N reference radio-frequency channels based on signals received by using each to-be-detected radio frequency channel. .

The first radio frequency unit is a connection between at least one of the N to-be-detected radio frequency channels and at least one of the N reference radio frequency channels based on signals received by using each to-be-detected radio frequency channel. Determine the relationship.

Specifically, when the first wireless remote unit includes four to-be-detected radio frequency channels, after the first measurement signals are received by using the four to-be-detected radio frequency channels of the first wireless remote unit each time, the first 1 wireless remote unit, based on the signal strengths of the first measurement signals received by using the four to-be-detected radio frequency channels, the radio frequency channel to be detected in which the received signal has the strongest strength is measured first. It is determined that the signal is a radio frequency channel to be detected that is connected to the reference radio frequency channel that is transmitted each time.

It should be noted that in this embodiment, only one reference radio frequency channel is used to transmit the first measurement signals each time. Thus, one connection relationship between the reference radio frequency channel and the radio frequency channel to be detected can be determined each time.

For example, there are 4 reference radio frequency channels and 4 to-be-detected radio frequency channels. Without loss of generality, the connection relationship in the case of the radio frequency channel i to be detected and the reference radio frequency channel i is correct, and i=1, 2, 3, or 4. When the reference radio frequency channel 1 is used to transmit the first measurement signal, the reference radio frequency channel 1 is the target reference radio frequency channel, and the first measurement signal transmitted by using the reference radio frequency channel 1 is the target measurement signal. to be. This target measurement signal or an interference signal of the target measurement signal is received by using four to-be-detected radio frequency channels of the first radio remote unit. The signal strengths on radio frequency channel 1 to be detected to radio frequency channel 4 to be detected are compared. If the signal strength on the radio frequency channel 1 to be detected is the strongest, the signal received by using the radio frequency channel 1 to be detected is determined as the target measurement signal, and the radio frequency channel 2 to be detected to the radio frequency channel 4 to be detected are used. The signals received by doing are determined as interfering signals, and the to-be-detected radio frequency channel 1 used to receive the target measurement signal is determined as the target-to-be-detected radio frequency channel. The target radio frequency channel to be detected corresponds to the target reference radio frequency channel, that is, as shown in FIG. 7, the radio frequency channel 1 to be detected is connected corresponding to the reference radio frequency channel 1. For another example, when the reference radio frequency channel 1 is used to transmit the first measurement signal, the reference radio frequency channel 1 is the target reference radio frequency channel, and the first measurement transmitted by using the reference radio frequency channel 1. The signal is a target measurement signal, and four reception channels of the first wireless remote unit are used to receive this target measurement signal or an interference signal of the target measurement signal. The signal strengths on radio frequency channel 1 to be detected to radio frequency channel 4 to be detected are compared. If the signal strength on the radio frequency channel 2 to be detected is the strongest, the signal received by using the radio frequency channel 2 to be detected is determined as a target measurement signal, and the radio frequency channel 1 to be detected, the radio frequency channel 3 to be detected, and Signals received by using the to-be-detected radio frequency channel 4 are determined as interfering signals, and the to-be-detected radio frequency channel 2 used to receive the target measurement signal is determined as the target-to-be-detected radio frequency channel. The target radio frequency channel to be detected corresponds to the target reference radio frequency channel, that is, as shown in FIG. 8, the radio frequency channel 2 to be detected is connected corresponding to the reference radio frequency channel 1.

604. Determining a connection relationship between N radio frequency channels to be detected and N antennas based on a connection relationship between at least one of the N radio frequency channels to be detected and at least one of the N reference radio frequency channels box.

The first radio frequency unit is based on a connection relationship between at least one of the N radio frequency channels to be detected and at least one of the N reference radio frequency channels, between the N radio frequency channels to be detected and the N antennas. Determine the connection relationship.

Specifically, the first radio frequency unit comprises N number of radio frequencies to be detected based on the signal strength of the first measurement signal transmitted by one reference radio frequency channel and received by using each to be detected radio frequency channel. A connection relationship between one of the channels and a target reference radio frequency channel is determined, and the reference radio frequency channel is a target reference radio frequency channel. A radio frequency channel to be detected, in which the received first measurement signal has the strongest signal strength, is connected to a target reference radio frequency channel, and this radio frequency channel to be detected is connected to an antenna connected to the target reference radio frequency channel.

For example, there are 4 reference radio frequency channels and 4 to-be-detected radio frequency channels. When the first wireless remote unit includes four radio frequency channels to be detected, the four reference radio frequency channels separately transmit the first measurement signals in sequence, and these first measurement signals are transmitted a total of four times. The connection relationship between the four to-be-detected radio frequency channels and the four reference radio frequency channels is determined each time and based on the connection relationship between one to-be-detected radio frequency channel and one reference radio frequency channel. Since one radio frequency channel to be detected is connected to one reference radio frequency channel and one reference radio frequency channel is connected to one antenna, the connection relationship between four radio frequency channels to be detected and four antennas Can be determined.

In a feasible implementation, the N radio frequency channels to be detected are connected to a building baseband unit (BBU) and the action specifically determining a connection relationship between the N radio frequency channels to be detected and the N antennas is Can be performed by the BBU. For example, steps 603 and 604 may alternatively be performed by a baseband unit (BBU), or may still be performed by a first radio frequency unit.

It can be appreciated that when a particular decision action is performed by the BBU, between step 602 and step 603, the step of transmitting, by the first radio frequency unit, the received first measurement signals to the BBU is further included:

Optionally: 605. Determine whether the actual connection relationship between the N radio frequency channels to be detected and the N antennas is the same as the preset connection relationship.

The first radio frequency unit or the BBU connected to the first radio frequency unit determines whether the actual connection relationship between the N radio frequency channels to be detected and the N antennas is the same as the preset connection relationship. Specifically, the first radio frequency unit or the BBU connected to the first radio frequency unit sets the actual connection relationship between the radio frequency channels to be detected and the reference radio frequency channels corresponding to the radio frequency channels to be detected in a preset connection relationship. (I.e., a preset accurate correspondence between radio frequency channels to be detected and reference radio frequency channels) is compared. If the actual connection relationship is different from the preset connection relationship, step 606 is performed. If the actual connection relationship is the same as the preset connection relationship, step 607 is performed.

Optionally: 606. Determine that the connection relationship between the reference radio frequency unit and the first radio frequency unit is incorrect, and provide a prompt.

The first radio frequency unit or the BBU connected to the first radio frequency unit determines that the connection relationship between the reference radio frequency unit and the first radio frequency unit is incorrect, and provides a prompt.

Optionally: 607. Determined that the connection relationship between the reference radio frequency unit and the first radio frequency unit is correct.

The first radio frequency unit or the BBU connected to the first radio frequency unit determines that the connection relationship between the reference radio frequency unit and the first radio frequency unit is correct.

In this embodiment of the present application, when the reference radio frequency unit is connected to the first radio frequency unit, the reference radio frequency unit sequentially transmits the first measurement signals according to a preset transmission sequence, and the first radio frequency unit is In the process of receiving the first measurement signals, it is detected whether the cable connection relationship between the first radio frequency unit and the antennas AU is correct, to assist the staff in the adjustment. This reduces the difficulty in secondary on-site configuration and improves configuration efficiency.

Referring to FIG. 9, another radio frequency channel access detection method according to an embodiment of the present application includes the following steps.

901. Simultaneous transmission of signals by using the N reference radio frequency channels of a reference radio frequency unit.

This embodiment is illustrated by using an example in which the signal is a measurement signal. This embodiment applies to a scenario in which measurement signals are transmitted simultaneously by using N reference radio frequency channels. In this embodiment, the second measurement signal is used as an example for explanation.

Specifically, the N reference radio frequency channels of the reference radio frequency unit are used to simultaneously transmit the second measurement signals, and these second measurement signals establish a connection relationship between the N radio frequency channels to be detected and the N antennas. Used to determine. Specifically, the N reference radio frequency channels of the reference radio frequency unit are used to simultaneously transmit the second measurement signals, and the transmitted second measurement signals are based on using each to-be-detected radio frequency channel of the first radio remote unit. Can be received by

Each of the N reference radio frequency channels is connected to one to-be-detected radio frequency channel by using a combiner device, and different reference radio frequency channels are connected to different to-be-detected radio frequency channels. When a reference radio frequency channel is used to transmit a signal, the to-be-detected radio frequency channel connected to this reference radio frequency channel is returned to the receiving channel of the radio frequency channel to be detected by using the standing wave channel and radio frequency loopback technique. , Can be used to loop through the signal transmitted by using the reference radio frequency channel and receive the signal. In this case, the strength of the signal received by using the radio frequency channel to be detected is relatively strong. Since radio frequency signals are characterized by spatial radiation and different radio frequency channels cannot be completely isolated, when a signal is transmitted on a reference radio frequency channel, the transmitted signal is a radio frequency channel to be detected that is not connected to the reference radio frequency channel. Also received on the award. Specifically, the transmitted signal flows as an interference signal to another radio frequency channel to be detected, and the strength of a signal received on another radio frequency channel to be detected is very weak.

The second measurement signal is a generic name of measurement signals transmitted on each reference radio frequency channel. In this embodiment, the characteristics of the second measurement signals transmitted on the reference radio frequency channels are different. The second measurement signal is a set of a plurality of measurement signals transmitted simultaneously, and is used to identify the first measurement signal in a scenario in which measurement signals are sequentially transmitted by using reference radio frequency channels. Different features can be expressed in multiple forms. For example, the second measurement signals may be different OFDM symbols, or the second measurement signals are generated by using different reference sequences, or the second measurement signals use different signal scrambling schemes. This is not specifically limited in this specification.

For example, in a process in which the active radio frequency unit of the AAU simultaneously transmits the second measurement signals, the reference radio frequency channels are numbered from top to bottom and from left to right; Alternatively, a test sequence set by the staff during product installation is used, and the reference radio frequency channels are numbered randomly. For example, N=4. When there are four reference radio frequency channels, these four reference radio frequency channels are sequentially numbered from 1 to 4 in a default sequence set by the provider. In the detection process, the second measurement signals are transmitted simultaneously by using the reference radio frequency channel 1 to the reference radio frequency channel 4. The quantity of reference radio frequency channels may alternatively be another value, for example 6, 8, or 10. This is not specifically limited in this specification.

It should be further noted that the N reference radio frequency channels may be all channels of the reference radio frequency unit, or some channels of the reference radio frequency unit. This is not specifically limited in this specification.

Optionally, "simultaneous sending" as known in the present application may be that transmission is completed on all of a plurality of radio frequency channels within a specific time period. It is not strictly required that transmissions start or end at the same moment. Optionally, when a preset time threshold is met, it is determined whether transmission of the second measurement signals is completed on all of the N reference radio frequency channels. When the transmission of the second measurement signals is completed on all of the N reference radio frequency channels, step 902 is performed. If the transmission of the second measurement signals is not completed on all of the N reference radio frequency channels, the next second measurement signal is transmitted simultaneously by using each reference radio frequency channel.

902. A first radio frequency unit receives signals transmitted by using each of the N to-be-detected radio frequency channels, by using the N reference radio frequency channels of the reference radio frequency unit.

The first radio frequency unit receives second measurement signals transmitted by using each of the N to-be-detected radio frequency channels, by using the N reference radio frequency channels of the reference radio frequency unit. The quantity of the N radio frequency channels to be detected in the first radio frequency unit is equal to the quantity of the N reference radio frequency channels. For example, when the quantity of radio frequency channels to be detected in the first radio frequency unit is 4, that is, when N is 4, the quantity of reference radio frequency channels is also 4, that is, N is also 4.

For example, all to-be-detected radio frequency channels of a first radio remote unit are used to receive second measurement signals transmitted by using the N reference radio frequency channels. Because the second measurement signals are transmitted at the same time, one second measurement signal with strong signal strength and several second measurement signals with weak signal strengths are simultaneously received on each radio frequency channel to be detected, and are subject to different signal characteristics. On the basis, it distinguishes the second measurement signals transmitted by using different reference radio frequency channels. For example, when there are 4 reference radio frequency channels, these 4 reference radio frequency channels are each numbered 1 to 4, and the 4 to-be-detected radio frequencies that are of the first radio remote unit and connected to the passive port. There are also channels, and these four radio frequency channels to be detected are also numbered 1-4 respectively. Since the characteristics of the second measurement signals transmitted by all the reference radio frequency channels are different, the second measurement signal transmitted by using the reference radio frequency channel 1 is referred to as feature signal 1. Similarly, the second measurement signal transmitted by using the reference radio frequency channel 2 is referred to as feature signal 2, and the second measurement signal transmitted by using the reference radio frequency channel 3 is referred to as feature signal 3, and , The second measurement signal transmitted by using the reference radio frequency channel 4 is referred to as a feature signal 4. Due to features such as spatial radiation of the second measurement signal, interference is created between radio frequency channels. Specifically, in addition to receiving the feature signal 1 transmitted by using the reference radio frequency channel 1 connected to the radio frequency channel 1 to be detected, other feature signals transmitted by using the other reference radio frequency channels ( The to-be-detected radio frequency channel 1 of the first wireless remote unit is further used to receive the feature signal 2, the feature signal 3, and the feature signal 4). For example, for feature signal 1 transmitted by using the reference radio frequency channel 1, if the radio frequency channel 1 to be detected is connected to the reference radio frequency channel 1, the radio frequency channel 1 to be detected is different from the feature signal 1 The feature signal is received, and the signal strength of the other feature signal is weaker than that of the feature signal 1. For another example, for a feature signal 1 transmitted by using the reference radio frequency channel 1, if the radio frequency channel 2 to be detected is connected to the reference radio frequency channel 1, the radio frequency channel 2 to be detected is the feature signal 1 and It is used to receive another feature signal, and the signal strength of the other feature signal is weaker than that of the feature signal 1.

For example, the first radio frequency unit is the first radio remote unit, the reference radio frequency unit is the active radio frequency unit RU of the AAU, and the first radio frequency unit transmitted by using the N reference radio frequency channels of the active radio frequency unit. The N to-be-detected radio frequency channels of the first radio remote unit are used to simultaneously receive the two measurement signals. The characteristics of the second measurement signals transmitted simultaneously by using the N reference radio frequency channels are different. Any one of the N to-be-detected radio frequency channels, ie, the target-to-be-detected radio frequency channel, is used to receive a plurality of second measurement signals having different characteristics, and the strengths of the second measurement signals are not exactly the same. The received signal having the strongest signal strength is determined as a target feature signal corresponding to the radio frequency channel to be detected, and the reference radio frequency channel transmitting the target feature signal is determined as a reference radio frequency channel connected to the radio frequency channel to be detected target do.

903. Determining a connection relationship between at least one of the N to-be-detected radio frequency channels and at least one of the N reference radio-frequency channels based on signals received by using each to-be-detected radio frequency channel. .

The first radio frequency unit comprises at least one of the N to-be-detected radio frequency channels and at least one of the N reference radio-frequency channels based on second measurement signals received by using each to-be-detected radio frequency channel. Determine the connection relationship between them.

Specifically, when the first wireless remote unit includes four to-be-detected radio frequency channels, after the second measurement signals are received by using the four to-be-detected radio frequency channels of the first wireless remote unit, the first The wireless remote unit, based on the signal strengths of the second measurement signals received by using the four to-be-detected radio frequency channels, the received signal has the strongest strength and the radio frequency channel to be detected has the strongest signal strength. It is determined that the measurement signal with is connected to the reference radio frequency channel to which it is transmitted.

For example, there are 4 reference radio frequency channels and 4 to-be-detected radio frequency channels. When there are 4 reference radio frequency channels, each numbered 1 to 4, there are also 4 to-be-detected radio frequency channels that are of the first radio remote unit and connected to the passive port, and these 4 to-be-detected radio frequency channels The channels are also numbered 1 to 4, respectively. Since the characteristics of the second measurement signals transmitted by all the reference radio frequency channels are different, the second measurement signal transmitted by using the reference radio frequency channel 1 is referred to as feature signal 1. Similarly, the second measurement signal transmitted by using the reference radio frequency channel 2 is referred to as feature signal 2, and the second measurement signal transmitted by using the reference radio frequency channel 3 is referred to as feature signal 3, and , The second measurement signal transmitted by using the reference radio frequency channel 4 is referred to as a feature signal 4. Due to features such as spatial radiation of the second measurement signal, interference is created between radio frequency channels. Specifically, in addition to receiving the characteristic signal 1 transmitted by using the reference radio frequency channel 1 connected to the radio frequency channel 1 to be detected, the transmission by using other reference radio frequency channels (interference paths) The to-be-detected radio frequency channel 1 of the first wireless remote unit is additionally used to receive other feature signals (feature signal 2, feature signal 3, and feature signal 4). For example, for feature signal 1 transmitted by using the reference radio frequency channel 1, the radio frequency channel 1 to be detected is connected to the reference radio frequency channel 1, and the radio frequency channel 2 to be detected is the reference radio frequency channel 2 Is connected to, the radio frequency channel 3 to be detected is connected to the reference radio frequency channel 3, and the radio frequency channel 4 to be detected is connected to the reference radio frequency channel 4, as shown in FIG. Is used to receive feature signal 1 and other feature signals (interference signals) with the strongest signal strength, and radio frequency channel 2 to be detected is feature signal 2 and other feature signals (interference signals) with the strongest signal strength. S), and the radio frequency channel 3 to be detected is used to receive the characteristic signal 3 and other characteristic signals (interference signals) with the strongest signal strength, and the radio frequency channel 4 to be detected is the strongest signal. It is used to receive feature signal 4 and other feature signals (interfering signals) having strength, and the signal strength of the interference signal received on the radio frequency channel 1 to be detected is that of the feature signal 1 received on the radio frequency channel 1 to be detected. Weaker than the signal strength. For another example, for feature signal 1 transmitted by using the reference radio frequency channel 1, the radio frequency channel 2 to be detected is connected to the reference radio frequency channel 1, and the radio frequency channel 1 to be detected is the reference radio frequency channel. 2, the radio frequency channel 3 to be detected is connected to the reference radio frequency channel 3, and the radio frequency channel 4 to be detected is connected to the reference radio frequency channel 4. In this case, as shown in FIG. 11, the radio frequency channel 2 to be detected receives the feature signal 1 and other feature signals (interference signals) having the strongest signal strength, and the radio frequency channel 1 to be detected is the most Receives feature signal 2 and other feature signals (interference signals) with strong signal strength, and radio frequency channel 3 to be detected receives feature signal 3 and other feature signals (interference signals) with the strongest signal strength And, the radio frequency channel 4 to be detected receives the characteristic signal 4 and other characteristic signals (interference signals) having the strongest signal strength, and the signal strength of the interference signal received on the radio frequency channel 2 to be detected is the radio frequency to be detected. It is weaker than the signal strength of characteristic signal 1 received on frequency channel 2.

It should be noted that in addition to receiving the feature signal 1 shown in Fig. 10, the radio frequency channel 1 to be detected is additionally used to receive other feature signals (feature signal 2, feature signal 3, and feature signal 4). do. The specific process is not described again herein.

904. Determining a connection relationship between N radio frequency channels to be detected and N antennas based on a connection relationship between at least one of the N radio frequency channels to be detected and at least one of the N reference radio frequency channels box.

The first radio frequency unit is based on a connection relationship between at least one of the N radio frequency channels to be detected and at least one of the N reference radio frequency channels, between the N radio frequency channels to be detected and the N antennas. Determine the connection relationship.

For example, there are 4 reference radio frequency channels and 4 to-be-detected radio frequency channels. A second measurement signal transmitted by a reference radio frequency channel connected to each to-be-detected radio frequency channel of the first radio frequency unit and received by using a radio frequency channel to be detected and a second measurement signal to be detected of the first radio frequency unit. The plurality of second measurement signals transmitted by using other reference radio frequency channels not connected to the radio frequency channel and received by using the radio frequency channel to be detected are one characteristic signal and the other characteristic signals (interference Signals), for example, feature signal 1 and other feature signals (feature signal 2, feature signal 3, and feature signal 4). The signal strength of the feature signal 1 is the strongest, and the reference radio frequency channel 1 used to transmit the feature signal 1 is a target reference radio frequency channel. A connection relationship between one of the four to-be-detected radio frequency channels and a target reference radio frequency channel is determined. For example, if the reference radio frequency channel 1 is used to transmit the feature signal 1, and the signal strength of the feature signal 1 in the second measurement signals received by using the radio frequency channel 1 to be detected is the strongest, the detection The radio frequency channel 1 to be detected is determined as the radio frequency channel to be detected connected to the reference radio frequency channel 1. The radio frequency channel 1 to be detected is connected to an antenna connected to the reference radio frequency channel 1.

For example, there are 4 reference radio frequency channels and 4 to-be-detected radio frequency channels. When the first wireless remote unit includes four radio frequency channels to be detected, the four reference radio frequency channels are used to transmit the second measurement signals simultaneously, and these second measurement signals are transmitted a total of once. The connection relationship between the four radio frequency channels to be detected and the four reference radio frequency channels is determined based on the determined connection relationship between the radio frequency channel to be detected and the reference radio frequency channel. Since one radio frequency channel to be detected is connected to one reference radio frequency channel and one reference radio frequency channel is connected to one antenna, the connection relationship between four radio frequency channels to be detected and four antennas Can be determined.

In a feasible implementation, the N radio frequency channels to be detected are connected to a building baseband unit (BBU) and the action specifically determining a connection relationship between the N radio frequency channels to be detected and the N antennas is Performed by the BBU. For example, steps 903 and 904 may be implemented on a first radio frequency unit, or may be implemented on a BBU.

It can be appreciated that when a particular decision action is performed by the BBU, between steps 902 and 903, a step of transmitting, by the first radio frequency unit, the received second measurement signals to the BBU is further included. This is not specifically limited in this specification.

Optionally: 905. Determine whether the actual connection relationship between the N radio frequency channels to be detected and the N antennas is the same as the preset connection relationship.

The first radio frequency unit or the BBU connected to the first radio frequency unit determines whether the actual connection relationship between the N radio frequency channels to be detected and the N antennas is the same as the preset connection relationship. Specifically, the first radio frequency unit or the BBU connected to the first radio frequency unit sets the actual connection relationship between the radio frequency channels to be detected and the reference radio frequency channels corresponding to the radio frequency channels to be detected in a preset connection relationship. (I.e., a preset accurate correspondence between radio frequency channels to be detected and reference radio frequency channels) is compared. If the actual connection relationship is different from the preset connection relationship, step 906 is performed. If the actual connection relationship is the same as the preset connection relationship, step 907 is performed.

Optionally: 906. Determine that the connection relationship between the reference radio frequency unit and the first radio frequency unit is incorrect, and provide a prompt.

The first radio frequency unit or the BBU connected to the first radio frequency unit determines that the connection relationship between the reference radio frequency unit and the first radio frequency unit is incorrect, and provides a prompt.

Optionally: 907. Determined that the connection relationship between the reference radio frequency unit and the first radio frequency unit is correct.

The first radio frequency unit or the BBU connected to the first radio frequency unit determines that the connection relationship between the reference radio frequency unit and the first radio frequency unit is correct.

In this embodiment of the present application, when the reference radio frequency unit is connected to the first radio frequency unit, the reference radio frequency unit simultaneously transmits the second measurement signals, and the first radio frequency unit receives the second measurement signals. In the process, it is detected whether the cable connection relationship between the antennas AU of the first radio frequency unit and the reference radio frequency unit is correct, to assist the staff in the adjustment. This reduces the difficulty in secondary on-site configuration and improves configuration efficiency.

The above description describes a method of detecting access to a radio frequency channel in the embodiments of the present application. The following describes an apparatus for detecting access to a radio frequency channel in embodiments of the present application. 12 shows an apparatus for detecting access to a radio frequency channel in an embodiment of the present application.

12 is a schematic structural block diagram of an apparatus for detecting access to a radio frequency channel according to an embodiment of the present application. Referring to FIG. 12, such a radio frequency channel connection detection apparatus includes a first radio frequency unit and a processor. When an integrated unit is used, Fig. 12 is a possible schematic structural diagram of a radio frequency channel connection detection apparatus in the above-described embodiments. Technicians in the art, the structure of the first radio frequency unit shown in Figure 12 does not constitute a limitation for the first radio frequency unit, the first radio frequency unit is more or more than those shown in the figure. It can be appreciated that it may contain fewer components, or combine some components, or have different component arrangements.

Referring to FIG. 12, the radio frequency channel access detection apparatus 1200 includes a first radio frequency unit 1201 and a processor 1202, and the first radio frequency unit 1201 includes N radio frequency channels to be detected. Include. Any one of the N to-be-detected radio frequency channels and one of the N reference radio frequency channels are connected to one of the N antennas by using a combiner device. Radio frequency channels to be detected are connected to different reference radio frequency channels and different antennas, where N is an integer greater than or equal to 2.

Each of the N to-be-detected radio frequency channels is configured to receive signals transmitted by using at least one of the N reference radio frequency channels.

The radio frequency channel connection detection apparatus further includes a processor 1202. The processor 1202 is connected to the N to-be-detected radio frequency channels, and between the N to-be-detected radio frequency channels and the N antennas based on signals received by using each to-be-detected radio frequency channel. Is configured to determine its connection relationship.

In this embodiment, the combiner device may be a combiner, the first radio frequency unit may be a radio remote unit, and the processor 1202 may be located in a radio remote unit (RRU), or located outside the RRU and independent It should be noted that it can exist as.

Next, each component of the radio frequency channel connection detection apparatus will be described in detail with reference to FIG. 13.

In a feasible implementation, the processor 1202,

Determine a connection relationship between at least one of the N to-be-detected radio frequency channels and at least one of the N reference radio frequency channels based on signals received by using each to-be-detected radio frequency channel; And

Added to determine a connection relationship between the N radio frequency channels to be detected and the N antennas based on a connection relationship between at least one of the N radio frequency channels to be detected and at least one of the N reference radio frequency channels Consists of

In a feasible implementation, the N reference radio frequency channels are configured to sequentially transmit signals.

Each of the N to-be-detected radio frequency channels is further configured to sequentially receive signals transmitted by using the N reference radio frequency channels.

In a feasible implementation, the processor 1202,

N reference radio frequency channels and one of the N to-be-detected radio frequency channels based on the signal strength of the signal transmitted by using the reference radio frequency channel and received by using each to-be-detected radio frequency channel To determine a connection relationship between one of the following-the radio frequency channel to be detected with the highest signal strength of the received signal is connected to the reference radio frequency channel, and the radio frequency channel to be detected is connected to the antenna connected to the reference radio frequency channel. It is constructed specifically.

In a feasible implementation, referring to FIG. 13, the radio frequency channel connection detection apparatus 1200 further includes a reference radio frequency unit 1203, and this reference radio frequency unit 1203 includes N reference radio frequency channels. Include.

These N reference radio frequency channels are configured to transmit signals simultaneously, and the characteristic of the signal transmitted by using any one of the N reference radio frequency channels is that using the other one of the N reference radio frequency channels. Is different from the characteristics of the signal transmitted by it.

Each of the N to-be-detected radio frequency channels is used to receive signals transmitted simultaneously by using the N reference radio frequency channels.

In a feasible implementation, the processor 1202,

One of the N to-be-detected radio frequency channels and one of the N reference radio frequency channels based on signal strengths of signals having the same characteristics and in signals received by using each to-be-detected radio frequency channel. To determine a connection relationship between one-by using it, the radio frequency channel to be detected from which a signal with the strongest signal strength in signals having the same characteristics is received is connected to the reference radio frequency channel, and the radio frequency to be detected The channel is specifically configured-connected to an antenna connected to the reference radio frequency channel.

In a feasible implementation, as shown in FIG. 14, the radio frequency channel connection detection apparatus 1200 further includes a baseband unit (BBU) 1204, and the baseband unit 1204 includes a processor 1202. do. Optionally, as shown in FIG. 15, the baseband unit may further include a memory 12041 and a communication interface 12042. The baseband unit 1204 is connected to the N to-be-detected radio frequency channels by using a communication interface.

The memory 12041 is connected to the processor 1202 and is configured to store programs and/or instructions to be executed by the processor 1202.

Communication interface 12042 is configured to receive a signal transmitted by each to-be-detected radio frequency channel.

Each radio frequency channel to be detected is further configured to transmit received signals to the baseband unit 1204.

It should be noted that the processor 1202 may be further configured to support other functions of the BBU. The BBU may further include many more other processors configured to support other functions of the baseband unit.

In a feasible implementation, the first radio frequency unit 1201 is a passive radio frequency unit.

In a feasible implementation, the reference radio frequency unit 1203 is an active radio frequency unit or a passive radio frequency unit.

In a feasible implementation, the reference radio frequency unit 1203 and the first radio frequency unit 1201 are connected to the same baseband unit 1204.

Optionally, as shown in FIG. 15, the baseband unit 1204 may further include a bus system 12043. The processor 1202, the memory 12041, and the communication interface 12042 may be connected to each other by using the bus system 12043. The bus system 12043 may be a peripheral component interconnect (PCI) bus, an extended industry standard architecture (EISA) bus, or the like. The bus 12043 may be classified into an address bus, a data bus, and a control bus. For ease of presentation, only one thick line is used to represent the bus in FIG. 15, but this does not mean that there is only one bus or only one type of bus.

Optionally, the apparatus 1200 for detecting access to a radio frequency channel may further include a bus system, a memory, a communication interface, and the like. The details are similar to those of the baseband unit, and the details are not described again herein.

The computer program product includes one or more computer instructions. When these computer program instructions are loaded and executed on a computer, a procedure or functions according to the embodiments of the present application are created in whole or in part. Such a computer may be a general purpose computer, a dedicated computer, a computer network, or other programmable devices. Such computer instructions may be stored on a computer-readable storage medium or may be transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, these computer instructions can be wired (e.g., coaxial cable, fiber optic or digital subscriber line (DSL)) or wireless (e.g., infrared) from a website, computer, server, or data center. , Wireless, or microwave), to other websites, computers, servers, or data centers. Such computer-readable storage media may be any available media accessible by a computer, or a data storage device, such as a server or data center, incorporating one or more available media. Such usable media include magnetic media (e.g., floppy disks, hard disks, or magnetic tapes), optical media (e.g., DVDs), semiconductor media (e.g., solid state disks, SSD)), etc.

When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application essentially, or a part contributing to the prior art, or all or part of these technical solutions may be implemented in the form of a software product. Such a software product is stored on a storage medium, and some instructions for instructing a computer device (which may be a personal computer, server, or network device) to perform all or part of the steps of the methods described in the embodiments of the present application. Includes them. The above-described storage medium is a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk to store program code. It includes any medium that can be used.

Claims (19)

As a radio frequency channel connection detection method,
Receiving one or more signals transmitted by the first radio frequency unit by using each of the N to-be-detected radio frequency channels, by using at least one of the N reference radio frequency channels of the reference radio frequency unit. Step-N is an integer of 2 or more -; And
Determining a connection relationship between the N to-be-detected radio frequency channels and N antennas based on signals received by using each to-be-detected radio frequency channel,
Any one of the N radio frequency channels to be detected and one of the N reference radio frequency channels are connected to one of the N antennas by using a combiner device, and the radio frequency channels to be detected are different. Reference radio frequency channels and method of being connected to different antennas. The method of claim 1, wherein determining a connection relationship between the N to-be-detected radio frequency channels and N antennas based on signals received by using each to-be-detected radio frequency channel comprises:
Determining a connection relationship between at least one of the N to-be-detected radio frequency channels and at least one of the N reference radio frequency channels based on signals received by using each to-be-detected radio frequency channel step; And
A connection relationship between the N radio frequency channels to be detected and the N antennas based on a connection relationship between at least one of the N radio frequency channels to be detected and at least one of the N reference radio frequency channels A method comprising the step of determining. The method of claim 1 or 2, wherein the method comprises:
Further comprising sequentially transmitting signals by using the N reference radio frequency channels;
Receiving signals transmitted by a first radio frequency unit by using each of the N to-be-detected radio frequency channels, by using at least one of the N reference radio frequency channels of the reference radio frequency unit, comprises: ,
And sequentially receiving signals transmitted by the first radio frequency unit by using each of the N to-be-detected radio frequency channels, by using the N reference radio frequency channels. The method of claim 3, wherein determining a connection relationship between the N to-be-detected radio frequency channels and N antennas based on signals received by using each to-be-detected radio frequency channel comprises:
One of the N to-be-detected radio frequency channels and the N references based on the signal strength of a signal transmitted by using the reference radio frequency channel and received by using each to-be-detected radio frequency channel. Determining a connection relationship between one of the radio frequency channels-a radio frequency channel to be detected having the strongest signal strength of a received signal is connected to the reference radio frequency channel, and the radio frequency channel to be detected is the reference radio frequency Connected to an antenna connected to a channel. The method of claim 1 or 2, wherein the method comprises:
Simultaneously transmitting signals by using the N reference radio frequency channels-The characteristic of the signal transmitted by using any one of the N reference radio frequency channels is one of the N reference radio frequency channels. It further comprises different from the characteristics of the signal transmitted by using the other;
Receiving signals transmitted by a first radio frequency unit by using each of the N to-be-detected radio frequency channels, by using at least one of the N reference radio frequency channels of the reference radio frequency unit, comprises: ,
And receiving signals simultaneously transmitted by the first radio frequency unit by using each of the N to-be-detected radio frequency channels, by using the N reference radio frequency channels. The method of claim 5, wherein determining a connection relationship between the N to-be-detected radio frequency channels and N antennas based on signals received by using each to-be-detected radio frequency channel comprises:
One of the N to-be-detected radio frequency channels and the N reference radio frequency channels based on signal strengths of signals having the same characteristics and in signals received by using each to-be-detected radio frequency channel Determining a connection relationship between one of the two-by using this, a radio frequency channel to be detected from which a signal having the strongest signal strength in signals having the same characteristics is received is connected to the reference radio frequency channel, And the radio frequency channel to be detected is connected to an antenna connected to the reference radio frequency channel. 7. The method according to claim 1, wherein by using each of the N to-be-detected radio frequency channels, by the first radio frequency unit, at least one of the N reference radio frequency channels of the reference radio frequency unit. After receiving the signals transmitted by using one, the method comprises:
Further comprising transmitting, by the first radio frequency unit, signals received by using each to-be-detected radio frequency channel to a baseband unit connected to the first radio frequency unit;
Determining a connection relationship between the N to be detected radio frequency channels and N antennas based on signals received by using each to be detected radio frequency channel,
Determining, by the baseband unit, a connection relationship between the N to-be-detected radio frequency channels and the N antennas based on signals received by using each to-be-detected radio frequency channel. How to include. The method according to any one of claims 1 to 7,
The reference radio frequency unit is an active radio frequency unit, and the first radio frequency unit is a passive radio frequency unit; or
Both the reference radio frequency unit and the first radio frequency unit are passive radio frequency units. 9. A method according to any one of claims 1 to 8, wherein the reference radio frequency unit and the first radio frequency unit are connected to the same baseband unit. An apparatus for detecting a radio frequency channel connection, comprising a first radio frequency unit, wherein the first radio frequency unit includes N radio frequency channels to be detected, and any one of the N radio frequency channels to be detected and the N One of the four reference radio frequency channels is connected to one of the N antennas by using a combiner device, the radio frequency channels to be detected are connected to different reference radio frequency channels and different antennas, N is Is an integer of 2 or more;
Each of the N to-be-detected radio frequency channels is configured to receive signals transmitted by using at least one of the N reference radio frequency channels;
The radio frequency channel connection detection apparatus further comprises a processor, wherein the processor is connected to the N to-be-detected radio frequency channels, based on signals received by using each to-be-detected radio frequency channel. A radio frequency channel connection detection apparatus, configured to determine a connection relationship between the N radio frequency channels to be detected and the N antennas. The method of claim 10, wherein the processor,
Determine a connection relationship between at least one of the N to-be-detected radio frequency channels and at least one of the N reference radio frequency channels based on signals received by using each to-be-detected radio frequency channel. ; And
A connection relationship between the N radio frequency channels to be detected and the N antennas based on a connection relationship between at least one of the N radio frequency channels to be detected and at least one of the N reference radio frequency channels Radio frequency channel connection detection apparatus further configured to determine. The method according to claim 10 or 11, further comprising a reference radio frequency unit, the reference radio frequency unit comprising the N reference radio frequency channels;
The N reference radio frequency channels are configured to sequentially transmit signals;
Each of the N radio frequency channels to be detected is further configured to sequentially receive signals transmitted by using the N reference radio frequency channels. The method of claim 12, wherein the processor,
One of the N to-be-detected radio frequency channels and the N references based on the signal strength of a signal transmitted by using the reference radio frequency channel and received by using each to-be-detected radio frequency channel. To determine a connection relationship between one of the radio frequency channels-the radio frequency channel to be detected having the strongest signal strength of the received signal is connected to the reference radio frequency channel, and the radio frequency channel to be detected is the reference radio frequency channel Connected to an antenna connected to-a radio frequency channel connection detection device configured specifically. The method according to claim 10 or 11, further comprising a reference radio frequency unit, the reference radio frequency unit comprising the N reference radio frequency channels;
The N reference radio frequency channels transmit signals simultaneously-the characteristic of the transmitted signal by using any one of the N reference radio frequency channels is that the other one of the N reference radio frequency channels is used. Differs from the characteristics of the signal transmitted by-configured;
Each of the N to-be-detected radio frequency channels is specifically configured to receive signals simultaneously transmitted by using the N reference radio frequency channels. The method of claim 14, wherein the processor,
One of the N to-be-detected radio frequency channels and the N reference radio frequency channels based on signal strengths of signals having the same characteristics and in signals received by using each to-be-detected radio frequency channel To determine a connection relationship between one of the-by using this, a radio frequency channel to be detected from which a signal having the strongest signal strength in signals having the same characteristics is received is connected to the reference radio frequency channel, and the The radio frequency channel to be detected is connected to an antenna connected to the reference radio frequency channel-a radio frequency channel connection detection apparatus configured specifically. The method of any one of claims 10 to 15, further comprising a baseband unit, wherein the baseband unit comprises a processor, a memory, and a communication interface, and the baseband unit uses the communication interface. Connected to the N to-be-detected radio frequency channels;
The memory is coupled to the processor and is configured to store programs and/or instructions to be executed by the processor;
The communication interface is configured to receive a signal transmitted by each to-be-detected radio frequency channel;
Each radio frequency channel to be detected is further configured to transmit the received signals to the baseband unit. 17. The radio frequency channel connection detection apparatus according to any one of claims 10 to 16, wherein the first radio frequency unit is a passive radio frequency unit. 15. The apparatus of claim 14, wherein the reference radio frequency unit is an active radio frequency unit or a passive radio frequency unit. 19. The radio frequency channel connection detection apparatus according to any one of claims 10 to 18, wherein the N reference radio frequency channels and the N radio frequency channels to be detected are connected to the same baseband unit.

Images